Intraday price change for BLK is about $5.24 from the day's low to the day's high.
The previous business day's price range from the open of $418.65 is expected to range from a low of $415.83 to a high of $421.07.
Price moves beyond this range are outside the average.
The previous business day's closing price may be between $419.17 and $418.13 assuming average price movements.
Note that events including news, BLK earnings, or broad market swings will unexpectedly affect price.
Closing prices outside of this range indicate a move outside the average closing price movement.